* @brief Highlight the blue or red region of the image. * @param image Input image ref * @return Single channel image */

* @brief The wrapper for function cv::findContours * @param binary binary image ref * @return Contours that found. */

* @brief Free certain memory block in the pool * @param memory_block Memory block to be freed */

* @brief Get the index of the child behavior node that it is turn to tick * @return The index of the child behavior node that it is turn to tick

* @brief Get the layered costmap * @return The class including layers */

returns a copy of the observations

* @brief Push the data into the buffer * @param item Item to be pushed into the buffer */

* @brief Set the default map of the costmap * @param c the cost value to set */

* @brief Set orientation * @param theta The new value of theta_ */

Initialize tracker

@brief Same as sign(x) but returns 0 if x is 0. */

Update position based on the new frame

* @brief Do add iteration add */

* @brief Calculate two 2D polygons' distance * @param vertices1 Vertices of first 2D polygon's vertices * @param vertices2 Vertices of second 2D pol

* @brief Get the state of the behavior node * @return The state of the behavior node */

* @brief Get the default value of the costmap * @return the default value of the map */

@brief The radius of a circle centered at the origin of the * robot which is just within all points and edges of the robot's * footprint. *

* @brief Get the footprint points which are already padded. * @return The vector of footprint point. */